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Non-Stationary Data & Fourier Transform

  1. Aug 6, 2008 #1
    I am trying to transform some non-stationary data into the frequency domain to see if there are any under lying frequencies in the data. a sample of the data can be seen here:

    Example 1
    Example 2
    Example 3

    when i look at the data i see a "step" function. I don't know if the fourier transform is the way to go... and was wondering if there was a better transfom to use?

  2. jcsd
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